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A Comparison of Ventilatory Prostate Movement in Four Treatment Positions by Laura A Dawson; Dale W Litzenberg; Kristy K Brock; Martin Sanda; Molly Sullivan; Howard M Sandler; James M Balter is a Medicine article available to read on EtoBox.

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## Purpose: To ensure target coverage during radiotherapy, all sources of geometric uncertainty in target position must be considered. movement of the prostate due to breathing has not traditionally been considered in prostate radiotherapy. the purpose of this study is to report the influence of patient orientation and immobilization on prostate movement due to breathing. ## Methods and materials: Four patients had radiopaque markers implanted in the prostate. fluoroscopy was performed in four different positions: prone in alpha cradle, prone with an aquaplast mold, supine on a flat table, and supine with a false table under the buttocks. fluoroscopic movies were videotaped and digitized. frames were analyzed using 2d-alignment software to determine the extent of movement of the prostate markers and the skeleton for each position during normal and deep breathing. ## Results: During normal breathing, maximal movement of the prostate markers was seen in the prone position (cranial-caudal [cc] range: 0.9-5.1 mm; anterior-posterior [ap] range: up to 3.5 mm). in the supine position, prostate movement during normal breathing was less than 1 mm in all directions. deep breathing resulted i

Who reads A Comparison of Ventilatory Prostate Movement in Four Treatment Positions?

Author

Laura A Dawson; Dale W Litzenberg; Kristy K Brock; Martin Sanda; Molly Sullivan; Howard M Sandler; James M Balter

Publisher

Elsevier Science; Elsevier ; Elsevier BV (ISSN 0360-3016)

Published

2000

Language

EN

Field

Medicine (Health Sciences)